I broke my dominant wrist a few years back. At the time, I was told to not carry anything heavier than a couple of pounds. Are you able to do anything with that hand/arm, or not?
Consider temporarily bringing in a vice for holding cans/bottles/etc in place while you twist the top/use a can opener, that kind of thing. Wrap a dishtowel around the object for grip, then carefully put it in the vice. I think I had the worst problem with leverage. You can also tuck the item under one arm and hold it against your body while you try to remove the top with the other, but this can be awkward. Also, if it’s a plastic bottle, you may find yourself squashing the bottle before you manage to get the cap off.
Try a large toolbelt or similar thing to keep what you need at hand, or to carry multiple objects somewhere with less juggling. You want lots of easily-accessible pouches.
You may need to buy more precut/prepackaged foods if you are unable to find a way to (hygienically and practically) steady foods for cutting. Since it was my dominant hand involved, I could hold food in place, but cutting could be an issue. I temporarily stopped cooking with anything hard (like carrots) that required more pressure from that hand, or used a food processor to do the work.
Trying to think of other things that I did; I’ll post again if I think of anything.